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LP3981

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具有使能功能的 300mA、高精度、低压降稳压器

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数据表

LP3981

正在供货
数据表 立即订购

产品详情

Output options Fixed Output Iout (max) (A) 0.3 Vin (max) (V) 6 Vin (min) (V) 2.7 Vout (max) (V) 3.3 Vout (min) (V) 2.5 Fixed output options (V) 2.5, 2.7, 2.8, 2.83, 3, 3.3 Noise (µVrms) 35 Iq (typ) (mA) 0.07 Thermal resistance θJA (°C/W) 57 Rating Catalog Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Features Enable Accuracy (%) 2 PSRR at 100 KHz (dB) 25 Dropout voltage (Vdo) (typ) (mV) 132 Operating temperature range (°C) -40 to 125
Output options Fixed Output Iout (max) (A) 0.3 Vin (max) (V) 6 Vin (min) (V) 2.7 Vout (max) (V) 3.3 Vout (min) (V) 2.5 Fixed output options (V) 2.5, 2.7, 2.8, 2.83, 3, 3.3 Noise (µVrms) 35 Iq (typ) (mA) 0.07 Thermal resistance θJA (°C/W) 57 Rating Catalog Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Features Enable Accuracy (%) 2 PSRR at 100 KHz (dB) 25 Dropout voltage (Vdo) (typ) (mV) 132 Operating temperature range (°C) -40 to 125
VSSOP (DGK) 8 14.7 mm² 3 x 4.9 WSON (NGC) 6 12 mm² 3 x 4
  • 2.5-V to 6-V Input Range
  • 300-mA Output Current
  • 60-dB PSRR at 1 kHz
  • ≤ 1-µA Quiescent Current When Shut Down
  • Fast Turnon Time: 120 µs (typical) with CBYPASS =
    0.01 µF
  • 132-mV Typical Dropout with 300-mA Load
  • 35-µVrms Output Noise Over 10 Hz to 100 kHz
  • Logic Controlled Enable
  • Stable With Ceramic and High-Quality Tantalum
    Capacitors
  • Thermal Shutdown and Short-Circuit Current Limit
  • Low Thermal Resistance in WSON-6 Package
    Gives Excellent Power Capability
  • 2.5-V to 6-V Input Range
  • 300-mA Output Current
  • 60-dB PSRR at 1 kHz
  • ≤ 1-µA Quiescent Current When Shut Down
  • Fast Turnon Time: 120 µs (typical) with CBYPASS =
    0.01 µF
  • 132-mV Typical Dropout with 300-mA Load
  • 35-µVrms Output Noise Over 10 Hz to 100 kHz
  • Logic Controlled Enable
  • Stable With Ceramic and High-Quality Tantalum
    Capacitors
  • Thermal Shutdown and Short-Circuit Current Limit
  • Low Thermal Resistance in WSON-6 Package
    Gives Excellent Power Capability

Performance of the LP3981 device is optimized for battery-powered systems to deliver ultra-low-noise, extremely low dropout voltage, and low quiescent current. Regulator ground current increases only slightly in dropout, further prolonging the battery life.

Power supply rejection is better than 60 dB at low frequencies. This high power supply rejection is maintained down to lower input voltage levels common to battery-operated circuits.

The device is ideal for mobile phone and similar battery-powered wireless applications. It provides up to 300 mA, from a 2.5-V to 6-V input, consuming less than 1 µA in disable mode.

The LP3981 is available in 8-pin VSSOP-8 and 6-pin WSON packages. Performance is specified for −40°C to +125°C temperature range. The device available in the following output voltages: 2.5 V, 2.7 V, 2.8 V, 2.83 V, 3 V, 3.03 V and 3.3 V as standard. Other output options can be made available; contact your local TI sales office for more information.

Performance of the LP3981 device is optimized for battery-powered systems to deliver ultra-low-noise, extremely low dropout voltage, and low quiescent current. Regulator ground current increases only slightly in dropout, further prolonging the battery life.

Power supply rejection is better than 60 dB at low frequencies. This high power supply rejection is maintained down to lower input voltage levels common to battery-operated circuits.

The device is ideal for mobile phone and similar battery-powered wireless applications. It provides up to 300 mA, from a 2.5-V to 6-V input, consuming less than 1 µA in disable mode.

The LP3981 is available in 8-pin VSSOP-8 and 6-pin WSON packages. Performance is specified for −40°C to +125°C temperature range. The device available in the following output voltages: 2.5 V, 2.7 V, 2.8 V, 2.83 V, 3 V, 3.03 V and 3.3 V as standard. Other output options can be made available; contact your local TI sales office for more information.
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* 数据表 LP3981 Micropower, 300-mA Ultra-Low-Dropout CMOS Voltage Regulator 数据表 (Rev. H) PDF | HTML 2015年 7月 18日

设计和开发

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参考设计

PMP10613 — Xilinx Zynq 7000 系列 (XC7Z045) 20W 参考设计

The PMP10613 reference design provides all the power supply rails necessary to power Xilinx® Zynq® 7000 series (XC7Z045)  FPGA.   This design uses several LMZ3 series modules, LDOs, and a DDR termination regulator to provide all the necessary rails to power the FPGA.  It (...)
测试报告: PDF
原理图: PDF
封装 引脚 下载
VSSOP (DGK) 8 查看选项
WSON (NGC) 6 查看选项
应遵守 TI 评估类商品的标准条款与条件。

订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

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